Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/15—Heterocyclic compounds having oxygen in the ring
  • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
  • C08K5/1515—Three-membered rings

Definitions

• epoxy compounds such as, for example phenoxy propene oxide or glycide ethers of phenols as stabilising agents for such compounds has already been suggested.
• liquid substances are meant in which the epoxy group is bound to the aromatic nucleus by way of an oxygen atom.
• solid polyepoxy compounds containing the epoxy group linked direct to the aromatic nucleus are excellently suitable for the stabilisation of halogen-containing macromolecular compounds, in particular polyvinyl chloride, polyvinylidene chloride, chlorinated rubber and mixed polymers containing vinyl chloride or vinylidene chloride, as well as polychlorinated diphenyls and polychloronaphthalenes.
• polyepoxides are 1.3- or 1.4-di-(epoxyethyl) -benzene or 1.3.5-tri-(epoxyethyl)-benzene of the following formulae:
• the new, heat stable compositions according to the present invention contain 0.1 to about 3% of the stabilisers, which amount is absolutely sulficient to attain a great improvement of the stability to heat of the products.
• the poly- 2,887,465 Patented May 19, 1959 epoxides mentioned can also be used for the stabilising of solutions of the macromolecular halogen compounds in organic solvents.
• Example 1 100 parts of a polymer obtained by emulsion polymerisation of vinyl chloride are mixed in powder form with 0.5 part of 1.3.5-tri-(epoxyethyl)-benzene in a ball mill. On plasticising on a hot roller mill and then pressing, sheets having excellent stability to heat are obtained.
• Example 2 A mixed polymer from parts of vinylidene chloride and 15 parts of vinyl chloride, obtained by emulsion polymerisation is mixed with 1 part of 1.3.5-tri-(epoxyethyl) -benzene in a ball mill and then formed into bristles or little bands in an alloy extruder containing no iron. The products obtained are very light coloured and have good stability to heat.
• Example 3 A 20% solution of chlorinated rubber which also contains 0.5% of l.4-di-(epoxyethyl)-benzene in toluene solution (calculated on the chlorinated rubber) is poured into a film. After drying, the film produced has very good stability to heat and weather.
• Example 4 parts of an emulsion polymer of vinyl chloride are mixed with 2.5 parts of the di-epoxide from technical divinyl benzene, consisting of about 70% of the meta and 30% of the para compound, 30 parts of dioctyl phthalate are added and the whole is rolled on a heated calender into a homogeneous foil.
• the product so obtained can be made into elastic forms which have excellent stability to heat.
• the new heat stable composition of matter consisting essentially of a chlorine containing macromolecular com pound selected from the group consisting of polyvinyl chloride, polyvinylidene chloride and chlorinated rubber and of from 0.1 to 3%, calculated on said compound, of a solid stabiliser selected from the group consisting of 1 .3-di-( epoxyethyl) -benzene, 1.4-di-(epoxyethy1) -benzene and l.3.5-tri-(epoxyethyl)-benzene.
• the new heat stable composition of matter consisting essentially of polyvinyl chloride and of from 0.5 to 1%, calculated on said compound, of 1.3.5-tri-(epoxyethyl) -b enzene.
• the new heat stable composition of matter consisting essentially of polyvinylidene chloride and of from 0.5 to 1%, calculated on said compound, of 1.3.5-tri- (epoxyethyl) -benzene.
• the new heat stable composition of matter consisting essentially of chlorinated rubber and of from 0.5 to 1%, calculated on said compound, of 1.4-di-(epoxyethy1)- benzene.

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

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• 1957
  • 1957-02-14 CH CH351749D patent/CH351749A/de unknown
• 1958
  • 1958-02-10 US US714079A patent/US2887465A/en not_active Expired - Lifetime
  • 1958-02-13 GB GB4725/58A patent/GB875017A/en not_active Expired
  • 1958-02-13 DE DEG23910A patent/DE1168071B/de active Pending

Patent Citations (1)

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